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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. When are dairy cattle dehorned?






2. 265-285 days






3. (male) pushes the testes upward toward the body for warmth or protection






4. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






5. Days which have decreasing daylight hours

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6. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






7. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






8. ~60 days before calving






9. (switzerland) 2nd in size and milk production - most muscle -






10. Start of the reproductive tract for the female. located outside of the body






11. 1-3 days






12. Allows extension of penis without fibro-elastic penis






13. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






14. Superior genes are _______ to multiply






15. Sperm is produced here






16. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






17. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






18. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






19. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






20. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






21. What helps regulate spermatogenesis?






22. 26 hours after estrus begins






23. Scar tissue plugs up chambers of udder






24. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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25. 114 days






26. What about the sperm for a bull which has been castrated but still has testicles?






27. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






28. Help to signal hormone levels which we need both in the brain right next to each other.






29. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






30. What helps regulate spermatogenesis?






31. 283 days






32. (male) pushes the testes upward toward the body for warmth or protection






33. Sperm production






34. 1. brain function - 2. blood flow - 3. willing female






35. Check feet and legs - look for masculine traits in build such as crest and muscling






36. Duct through penis that carries sperm and urine






37. 1-3 days






38. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






39. 1. brain function - 2. blood flow - 3. willing female






40. Milk ~305 days - dry 60 days prior to calving






41. 19-23 (21) days






42. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






43. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






44. Animals which have only one estrous cycle (ex: dog - fox)






45. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






46. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






47. 10-37 (21) days






48. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






49. Failure to have one testis (gonad) to descend






50. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood